Github user WeichenXu123 commented on a diff in the pull request:
https://github.com/apache/spark/pull/14923#discussion_r77352136
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/stat/MultivariateOnlineSummarizer.scala
---
@@ -233,7 +233,7 @@ class MultivariateOnlineSummarizer extends
MultivariateStatisticalSummary with S
override def numNonzeros: Vector = {
require(totalWeightSum > 0, s"Nothing has been added to this
summarizer.")
--- End diff --
yeah, here it should use `totalCnt`, I update it.
and I fix the testcase, now the existing testcase already cover the method.
thanks!
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